exam Maths Puzzle Numerical Ability

write an algebric expression for the sum of a number and 7

write an algebric expression for the product of 5 and a number

write an algebric expression one half the cube of n

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exam Other Question

Will someone please help me solve this problem? It says to express in simpliest radical form:2/3radical 9 Please help me with this problem:

[x-(-6+ the square root of 13)][x-(-6)-the square root of 13)] Find the product.

Thank you for your help!